diff options
| -rw-r--r-- | arch/arm/plat-omap/include/plat/mcbsp.h | 15 | ||||
| -rw-r--r-- | arch/arm/plat-omap/mcbsp.c | 120 |
2 files changed, 59 insertions, 76 deletions
diff --git a/arch/arm/plat-omap/include/plat/mcbsp.h b/arch/arm/plat-omap/include/plat/mcbsp.h index eed20ef869f9..0fad63c7df18 100644 --- a/arch/arm/plat-omap/include/plat/mcbsp.h +++ b/arch/arm/plat-omap/include/plat/mcbsp.h @@ -354,10 +354,10 @@ struct omap_mcbsp { struct clk *fclk; #ifdef CONFIG_ARCH_OMAP3 struct omap_mcbsp_st_data *st_data; +#endif int dma_op_mode; u16 max_tx_thres; u16 max_rx_thres; -#endif void *reg_cache; }; @@ -377,7 +377,6 @@ extern int omap_mcbsp_count, omap_mcbsp_cache_size; int omap_mcbsp_init(void); void omap_mcbsp_config(unsigned int id, const struct omap_mcbsp_reg_cfg * config); -#ifdef CONFIG_ARCH_OMAP3 void omap_mcbsp_set_tx_threshold(unsigned int id, u16 threshold); void omap_mcbsp_set_rx_threshold(unsigned int id, u16 threshold); u16 omap_mcbsp_get_max_tx_threshold(unsigned int id); @@ -386,18 +385,6 @@ u16 omap_mcbsp_get_fifo_size(unsigned int id); u16 omap_mcbsp_get_tx_delay(unsigned int id); u16 omap_mcbsp_get_rx_delay(unsigned int id); int omap_mcbsp_get_dma_op_mode(unsigned int id); -#else -static inline void omap_mcbsp_set_tx_threshold(unsigned int id, u16 threshold) -{ } -static inline void omap_mcbsp_set_rx_threshold(unsigned int id, u16 threshold) -{ } -static inline u16 omap_mcbsp_get_max_tx_threshold(unsigned int id) { return 0; } -static inline u16 omap_mcbsp_get_max_rx_threshold(unsigned int id) { return 0; } -static inline u16 omap_mcbsp_get_fifo_size(unsigned int id) { return 0; } -static inline u16 omap_mcbsp_get_tx_delay(unsigned int id) { return 0; } -static inline u16 omap_mcbsp_get_rx_delay(unsigned int id) { return 0; } -static inline int omap_mcbsp_get_dma_op_mode(unsigned int id) { return 0; } -#endif int omap_mcbsp_request(unsigned int id); void omap_mcbsp_free(unsigned int id); void omap_mcbsp_start(unsigned int id, int tx, int rx); diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c index 97bcbfac068a..234ab16e8399 100644 --- a/arch/arm/plat-omap/mcbsp.c +++ b/arch/arm/plat-omap/mcbsp.c @@ -492,6 +492,11 @@ int omap_st_is_enabled(unsigned int id) } EXPORT_SYMBOL(omap_st_is_enabled); +#else +static inline void omap_st_start(struct omap_mcbsp *mcbsp) {} +static inline void omap_st_stop(struct omap_mcbsp *mcbsp) {} +#endif + /* * omap_mcbsp_set_rx_threshold configures the transmit threshold in words. * The threshold parameter is 1 based, and it is converted (threshold - 1) @@ -501,14 +506,13 @@ void omap_mcbsp_set_tx_threshold(unsigned int id, u16 threshold) { struct omap_mcbsp *mcbsp; - if (!cpu_is_omap34xx() && !cpu_is_omap44xx()) - return; - if (!omap_mcbsp_check_valid_id(id)) { printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); return; } mcbsp = id_to_mcbsp_ptr(id); + if (mcbsp->pdata->buffer_size == 0) + return; if (threshold && threshold <= mcbsp->max_tx_thres) MCBSP_WRITE(mcbsp, THRSH2, threshold - 1); @@ -524,14 +528,13 @@ void omap_mcbsp_set_rx_threshold(unsigned int id, u16 threshold) { struct omap_mcbsp *mcbsp; - if (!cpu_is_omap34xx() && !cpu_is_omap44xx()) - return; - if (!omap_mcbsp_check_valid_id(id)) { printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); return; } mcbsp = id_to_mcbsp_ptr(id); + if (mcbsp->pdata->buffer_size == 0) + return; if (threshold && threshold <= mcbsp->max_rx_thres) MCBSP_WRITE(mcbsp, THRSH1, threshold - 1); @@ -601,6 +604,8 @@ u16 omap_mcbsp_get_tx_delay(unsigned int id) return -ENODEV; } mcbsp = id_to_mcbsp_ptr(id); + if (mcbsp->pdata->buffer_size == 0) + return 0; /* Returns the number of free locations in the buffer */ buffstat = MCBSP_READ(mcbsp, XBUFFSTAT); @@ -624,6 +629,8 @@ u16 omap_mcbsp_get_rx_delay(unsigned int id) return -ENODEV; } mcbsp = id_to_mcbsp_ptr(id); + if (mcbsp->pdata->buffer_size == 0) + return 0; /* Returns the number of used locations in the buffer */ buffstat = MCBSP_READ(mcbsp, RBUFFSTAT); @@ -659,11 +666,6 @@ int omap_mcbsp_get_dma_op_mode(unsigned int id) } EXPORT_SYMBOL(omap_mcbsp_get_dma_op_mode); -#else -static inline void omap_st_start(struct omap_mcbsp *mcbsp) {} -static inline void omap_st_stop(struct omap_mcbsp *mcbsp) {} -#endif - int omap_mcbsp_request(unsigned int id) { struct omap_mcbsp *mcbsp; @@ -937,7 +939,6 @@ void omap2_mcbsp1_mux_fsr_src(u8 mux) } #endif -#ifdef CONFIG_ARCH_OMAP3 #define max_thres(m) (mcbsp->pdata->buffer_size) #define valid_threshold(m, val) ((val) <= max_thres(m)) #define THRESHOLD_PROP_BUILDER(prop) \ @@ -1028,6 +1029,18 @@ unlock: static DEVICE_ATTR(dma_op_mode, 0644, dma_op_mode_show, dma_op_mode_store); +static const struct attribute *additional_attrs[] = { + &dev_attr_max_tx_thres.attr, + &dev_attr_max_rx_thres.attr, + &dev_attr_dma_op_mode.attr, + NULL, +}; + +static const struct attribute_group additional_attr_group = { + .attrs = (struct attribute **)additional_attrs, +}; + +#ifdef CONFIG_ARCH_OMAP3 static ssize_t st_taps_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -1086,27 +1099,6 @@ out: static DEVICE_ATTR(st_taps, 0644, st_taps_show, st_taps_store); -static const struct attribute *additional_attrs[] = { - &dev_attr_max_tx_thres.attr, - &dev_attr_max_rx_thres.attr, - &dev_attr_dma_op_mode.attr, - NULL, -}; - -static const struct attribute_group additional_attr_group = { - .attrs = (struct attribute **)additional_attrs, -}; - -static inline int __devinit omap_additional_add(struct device *dev) -{ - return sysfs_create_group(&dev->kobj, &additional_attr_group); -} - -static inline void __devexit omap_additional_remove(struct device *dev) -{ - sysfs_remove_group(&dev->kobj, &additional_attr_group); -} - static const struct attribute *sidetone_attrs[] = { &dev_attr_st_taps.attr, NULL, @@ -1167,45 +1159,18 @@ static void __devexit omap_st_remove(struct omap_mcbsp *mcbsp) static inline void __devinit omap34xx_device_init(struct omap_mcbsp *mcbsp) { - mcbsp->dma_op_mode = MCBSP_DMA_MODE_ELEMENT; - if (cpu_is_omap34xx()) { - /* - * Initially configure the maximum thresholds to a safe value. - * The McBSP FIFO usage with these values should not go under - * 16 locations. - * If the whole FIFO without safety buffer is used, than there - * is a possibility that the DMA will be not able to push the - * new data on time, causing channel shifts in runtime. - */ - mcbsp->max_tx_thres = max_thres(mcbsp) - 0x10; - mcbsp->max_rx_thres = max_thres(mcbsp) - 0x10; - /* - * REVISIT: Set dmap_op_mode to THRESHOLD as default - * for mcbsp2 instances. - */ - if (omap_additional_add(mcbsp->dev)) - dev_warn(mcbsp->dev, - "Unable to create additional controls\n"); - + if (cpu_is_omap34xx()) if (mcbsp->id == 2 || mcbsp->id == 3) if (omap_st_add(mcbsp)) dev_warn(mcbsp->dev, "Unable to create sidetone controls\n"); - - } else { - mcbsp->max_tx_thres = -EINVAL; - mcbsp->max_rx_thres = -EINVAL; - } } static inline void __devexit omap34xx_device_exit(struct omap_mcbsp *mcbsp) { - if (cpu_is_omap34xx()) { - omap_additional_remove(mcbsp->dev); - + if (cpu_is_omap34xx()) if (mcbsp->id == 2 || mcbsp->id == 3) omap_st_remove(mcbsp); - } } #else static inline void __devinit omap34xx_device_init(struct omap_mcbsp *mcbsp) {} @@ -1311,11 +1276,38 @@ static int __devinit omap_mcbsp_probe(struct platform_device *pdev) platform_set_drvdata(pdev, mcbsp); pm_runtime_enable(mcbsp->dev); + mcbsp->dma_op_mode = MCBSP_DMA_MODE_ELEMENT; + if (mcbsp->pdata->buffer_size) { + /* + * Initially configure the maximum thresholds to a safe value. + * The McBSP FIFO usage with these values should not go under + * 16 locations. + * If the whole FIFO without safety buffer is used, than there + * is a possibility that the DMA will be not able to push the + * new data on time, causing channel shifts in runtime. + */ + mcbsp->max_tx_thres = max_thres(mcbsp) - 0x10; + mcbsp->max_rx_thres = max_thres(mcbsp) - 0x10; + + ret = sysfs_create_group(&mcbsp->dev->kobj, + &additional_attr_group); + if (ret) { + dev_err(mcbsp->dev, + "Unable to create additional controls\n"); + goto err_thres; + } + } else { + mcbsp->max_tx_thres = -EINVAL; + mcbsp->max_rx_thres = -EINVAL; + } + /* Initialize mcbsp properties for OMAP34XX if needed / applicable */ omap34xx_device_init(mcbsp); return 0; +err_thres: + clk_put(mcbsp->fclk); err_res: iounmap(mcbsp->io_base); err_ioremap: @@ -1335,6 +1327,10 @@ static int __devexit omap_mcbsp_remove(struct platform_device *pdev) mcbsp->pdata->ops->free) mcbsp->pdata->ops->free(mcbsp->id); + if (mcbsp->pdata->buffer_size) + sysfs_remove_group(&mcbsp->dev->kobj, + &additional_attr_group); + omap34xx_device_exit(mcbsp); clk_put(mcbsp->fclk); |